Cheap Pololu round robot chassis, Tamiya twin-motor gearboxes, Tamiya truck tires. 9V battery pack for the Arduino. 2 AA battery pack for the motors, although I need a little more juice. I may add another 2 AA battery pack and supply each motor separately, or use a 3 battery pack and see how the motors like 4.5V.

Ongoing project. Just about to shoot my first video of the robot in basic maneuvering. No sensors installed at this time.

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Mother of Gawd, that's the EXACT SAME fold-up table I use as my workbench!!!! I know that wood grain and the rounded edges... man. I just though that such a fine sense of style for furniture should be noted :)